Which of the following statements about genes is incorrect?
A) Genes correspond to segments of DNA.
B) Many genes contain the information needed for cells to synthesize enzymes and other proteins.
C) During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg.
D) Under normal circumstances, each chromosome contains precisely one gene.
E) Genetic differences can result from changes in the DNA called mutations
Ans: D) Under normal circumstances, each chromosome contains precisely one gene.
You might also like to view...
Skeletal muscle cells have ____ and are controlled by the ____ nervous system
a. many nuclei; somatic b. many nuclei; autonomic c. one nucleus each; autonomic d. one nucleus each; somatic e. two nuclei each; somatic
Bacteria are able to respond quickly to their surroundings, such as in the presence of an abundant food source. This isbecause:a
genes for functionally related enzymes are regulated together in operons. b. genes for functionally related enzymes are always constitutive. c. genes for functionally related enzymes are always under positive control. d. efficient protein degradation removes unneeded proteins quickly. e. all bacterial genes are constitutive.
When Mendel crossed tall (Tt) plants with tall (Tt) plants the offspring
a) did not grow and reproduce. b) were always short. c) were always tall. d) were always medium height. e) were mostly tall individuals and a few short individuals.
What distinguishing feature characterizes aerobic and anaerobic respiration but does not play a role in fermentation pathways?
A. Oxidation-reduction reactions B. The presence of an electron transport chain C. Hydrolysis reactions D. The absence of O2